Improvement in devices for clamping or cutting off tubes and rods



rata site that effet,

JAMES W. MAHLO-N, OF BROOKLYN, NEW-YORK.

Letters Patent No. 109,747, dated November 29, 1870.

IMPROVEMENT IN DEVICES FOR CLAIVIPING OR CUTTING lOFF TUBES AND RODS.

The Schedule referred to in these Letters Patent and making part of the same.

vTo all whom it 'may concern:

Be it known that I, JAMES W. MAHLON, of Brooklyn, in the county of Kings and State of New York,

have invented a new and useful Combined Tongs, Vise, and Pipe-Cutter, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing forming part of this specification, and in whichl Figure l represents a side view of 1n y; improved tool, with its parts arranged to formwzrpipe-tongs, or, by the insertion of cutters, such a's shown in fig. 2, with its parts arranged to form a pipe-cutter, and

Figure 3, a front edge view of` the saine. A

Figure 4 represents a side view of the tool, in connection with a clamp, when the same is designed to be used as a vise; and

Figure 5, a front view of the said clamp.

Similar letters of reference indicate corresponding parts.

My invention consists in a tool mainly designed for gas-litters and plumbers` use, which shall be readily convertible either into a pipe-tongs, a pipe-cutter, or a vise for holding gas-pipe in the course of' finishing or rep. iring it, said tool embracingaxed slotted claw or jaw at the end-of the tool-stock, a sliding jaw or cutter-holder, adjustable toward or from the xed claw by means-ot' ascrew which works through a box that is free to slide upon the stock,and is controlled bythe working of the handle inthe operation of the tool .as a tongs or pipe-cutter.

The invention also includes a peculiarlylconstructed clamp'an'd tool-stock,to allow ofthe conversion of the tool in to a vise.

Referring, in the first instance, to 1, 2, and 3 ci' the drawing*- A represents the stock of the tool, made in sections or slotted, as at c a, to provide for the tit therein and on, of the sliding jaw or cutter-holder B and screw-box O.

In using thc tool as a pipe-tongs, a serrated jaw, D, is let into a slot, b, made in the holder B, and securely 'retained therein by means ot' a cross-pin, "o, said jaw being arranged to face a slot, d; in the xed claw E,

at the outer end of thestock, so that said jaw D may be I is being used as a pipe-cutter,to establish gripe of the pipe by means ot a screw, G, which`works through the screw-box O, that is made capable of a separate sliding action upon the stock, carrying the holder B along with it by means of the handle H, pivoted, as at e, to the stock, and pressing with a cam-like action on or against the back of the screw-box C, or projenA tion therefrom, to move the holder B toward the fixed claw E when the tool is worked in one direction, but relieving itself from pressure on the screw-box when the tool is worked in lthe opposite direction.

This action of the handle effects for the t'ool its nec essaryoperation on the pipe, as,for instance, in screwing or unscicwing two lengths or sections'together,

by restricting 4the .gripe to movement in one direction only of the tool Where there is notroom to swing the tool an entire circle, but in cases where there is room for such a whole sweep of the tool, the construction o; the latter admits of its being so used.

To prevent rattle or shake in a back swing of the tool, the handle I-I may be connected with the sliding screw-box G by a hook, I, pivoted to said box, and borne down by a spring, f, to make the hook catch on or o ver a pin, g, secured to the handle. This in no way interferes with the cam-like action of the handle to work the screw-box C and holder B forward,'but draws said boxF and holder back, free from rattle or shake in the return stroke of the handle.

The tail-end of the hook I is made to projectthrough the handle, to allow of said hook being disconnected from the handle, when required.

lo convert the tool into a vise, the utility of which in places away from the work-shop will be found very serviceable, as, for instance, when required to shorten a length ct' pipe and to cut a screw-thread thereon, I provide, as a necessary element in the combination, a clamping attachment that can be conveniently secured to any upright or other post without boring or drilling. For this purpose the stock A is made with alip, h, at its back or outer end, and a clamp, consisting of a back plate, J, and a i'ont plate, J', (see igs. 4 and 5,)'is firmly secured to any convenient post, K, by means of side bolts and nuts -i j.

llhe front plate J" of this clamp is provided at its one end with a clip or lip-shaped projection, m, and at its other end with side lugs or ears n a, so that the stock A of the tool may be fitted, by its lip 7i, into. lockwithin or under the clip m, and the pivot-pin e of the handle be projected through and secured to the .side lugs u n, with or.v without the handle Hw in its place.

tion of the vise, and'which is adjustable by the screw G, while the claw' E forms .the fixed portion thereof.

`A tool combining, as this doce, three Vdifferent implements in one, will be found very convenient by gas- .tters 'and others,ravndi,` in avoiding a. multiplicity of coolse prove decidedly economical.

` Whatis here claimed, and desired to be secured by Letters Patent, is' l 1. The combinationof the stock A, having a lip,

h, on the one end,l the clamping-plates'J J' united by boltsend nuts, the clip m, side lugs n n., andv bolt e,the whole arranged and operating substantially as and for the purpose herein set forth.

l2. The improved machine hereindeseribed, adapted to the interchangeable uses of holding and cutting olf JAMES W'. MAHLON.

pipe. i

Witnesses FREDK. HAYNES, R. E. RABEAU. 

